Note 11 - Income Taxes (Details) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Note 11 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	$ 4,272,000
Deferred Tax Assets, Valuation Allowance	6,161,000	$ 6,450,000
Unrecognized Tax Benefits	$ 447,000	485,000
Oregon Net Operating Loss Term	4 years
Oregon Research and Development Credit Term	2 years
Deferred Tax Assets, Operating Loss Carryforwards, Foreign		4,465,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 292,000	333,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued	152,000	169,000
Reserve for Unrecognized Tax Benefits Including Penalties and Interest	891,000	987,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	739,000	819,000
Unrecognized Tax Benefits, Period Increase (Decrease)	40,000	147,000	$ 540,000
Domestic Tax Authority [Member]
Note 11 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	506,000	556,000
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member]
Note 11 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	1,716,000	1,727,000
Deferred Tax Assets, Valuation Allowance	1,716,000	1,721,000
Deferred State and Local Income Tax Expense (Benefit)	(5,000)	489,000	$ 312,000
State and Local Jurisdiction [Member] | Tennessee State Tax [Member]
Note 11 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local		90,000
State and Local Jurisdiction [Member] | Oregon State Tax [Member]
Note 11 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	173,000	173,000
State and Local Jurisdiction [Member] | State Tax Code Change [Member] | New York State Division of Taxation and Finance [Member]
Note 11 - Income Taxes (Details) [Line Items]
Unrecognized Tax Benefits		362,000
Foreign Tax Authority [Member] | Canada Revenue Agency [Member]
Note 11 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 4,272,000	$ 4,465,000